My research focuses on several biodiversity-related disciplines as taxonomy, biogeography, phylogenetics and macroecology. Regarding systematics, my taxonomic skills range several beetle families (Coleoptera). I am especially interested in leaf beetles (Chrysomelidae), and my taxonomic papers were devoted to both adult and larval stages. Most of my taxonomic studies dealt with the Iberian fauna, but I have also addressed Palaearctic revisions of genus Chaetocnema and the light-coloured Neocrepidodera species groups. I am also interested in many other beetle taxa, as the Iberian blind edaphic Staphylinidae (genera Mayetia and Hesperotyphlus) and the new world Zopheridae. As a result of my taxonomic work, I have described 22 species new to science. Regarding macroecological questions, I am mostly interested in the integration of beta diversity patterns in the central debate about large-scale patterns of biodiversity. Compared to the variation in the number of species, the variation in community composition (beta diversity) provides different information (i.e. two communities could have exactly the same number of species but completely different composition). Therefore, the assessment of such species turnover patterns will provide new evidence, allowing new approaches to biogeographical and macroecological questions.